胸部X-線像에서의 肺門 및 旁氣管陰影의 正當幅測定値와 그 診斷的意義에 關하여 = The Diagnostic Significance of the Enlarged Hilar and Paratracheal Shadows on Routine Chest Roentgenogram
저자
宋孝元 (首都醫科大學 放射線科學敎室)
발행기관
학술지명
권호사항
발행연도
1967
작성언어
Korean
KDC
510.000
자료형태
학술저널
수록면
335-351(17쪽)
제공처
It is generally well understood that clinicians and radiologists have a great difficulty in determining presence or absence of slight enlargement of the hilus and paratracheal lymph nodes which occur so frequently in primary tuberculosis and bronchogenic carcinoma. dr. Rigler(1952) first made observations on the significance of unilateral enlargement of the hilar shadow in the early diagnosis of carcinoma of the lung. He compared his normal values of the hilar diameters obtained from 100 normal adults with the cases of carcinoma of the lung in an attempt to detect early enlargement of the hilus.
This study was undertaken to establish normal values of the transverse diameters of the paratracheal and hilar shadows on routine chest X-rays of normal Koreas according to various age groups, and to evaluate how much the data obtained from normal group do contribute to early diagnosis of primary tuberculesis in children and bronchogenic carcinoma.
Part Ⅰ. Roentgenographic Measurement of the Hilar and Paratracheal Shadows in Normal Koreans The author made measurement of the transverse diameters of the paratracheal and hilar shadows on the routine postero-anterior chest X-rays of 1.080 normal Koreans, ranging from 2 to 70 years in age.
The results obtained are as follows:
1. The transverse diameters of the paratracheal shadows
Age group Mean ±S. D. age group Mean ±S. D.
2-3 y 3.31㎝ ±0.372㎝ 4-5 y 3.58㎝ ±0.226㎝
6-8 y 3.76㎝ ±0.437㎝ 9-11y 4.26㎝ ±435㎝
12-13 y 4.36㎝ ±47㎝ 14-15y 4.48㎝ ±0.491㎝
16-17y 4.57㎝ ±0.577㎝ 18-40y 4.66㎝ ±0.449㎝
41-70y 4.69㎝ ±0.490㎝
2. The transverse diameters of the right hilar shadows
Age group Mean ±S. D. Age group Mean ±S. D.
2-3 y 2.55㎝ ±0.413㎝ 4-5 y 2.90㎝ ±0.230㎝
6-8 y 2.99㎝ ±0.465㎝ 9-11y 3.58㎝ ±0.393㎝
12-13y 3.82㎝ ±0.230㎝ 14-15y 4.22㎝ ±0.386㎝
16-17y 4.40㎝ ±478㎝ 18-40y 4.54㎝ ±0.378㎝
41-70y 5.01㎝ ±0.435㎝
3. The transverse diameters of the left hilar shadows
Age group Mean ±. D. Age group Mean ±S. D.
2-3 y 3.20㎝ ±0.274㎝ 4-5 y 3.39㎝ ±0.200㎝
6-8 y 3.51㎝ ±0.300㎝ 6-11y 3.91㎝ ±0.339㎝
12-13y 4.31㎝ ±0.394㎝ 14-15y 4.97㎝ ±0.558㎝
16-17y 5.19㎝ ±0.332㎝ 18-40y 5.21㎝ ±0.382㎝
41-70y 5.35㎝ ±0.460㎝
4. The sums of the right and left hilar diameters
Age group Mean ±S. D. Age group Mean ±S. D.
2-3 y 5.75㎝ ±0.737㎝ 4-5 y 6.27㎝ ±0.350㎝
6-8 y 6.49㎝ ±0.767㎝ 9-11y 7.49㎝ ±.0.732㎝
12-13y 8.13㎝ ±0.619㎝ 14-15y 9.19㎝ ±0.976㎝
16-17y 9.45㎝ ±0.976㎝ 18-40y 9.50㎝ ±0.759㎝
41-70y 9.89㎝ ±0.840㎝
5. The transverse diameter of the left hilus was larger than that of the right hilus in 93.4%. The difference between the right and left hilar diameters was 1 cm or less in 84.5% and 0.1 cm to 0.8 cm in 66% of all age groups. In 6.6% there was no difference between both hilar diameters.
6. The diameters of both partracheal and hilar shadows tended to increases progressively as the age of the individuals advanced.
Part Ⅱ. The Roentgenographic Study on the Hilar and Paratracheal Shadows in Cases of Primary Tuberculosis in Children
A comparative study was done on the observations in 120 normal children of 4-5 age group with 75 cases of early primary tuberculosis of the same age, and statistically significant differences between these two groups were found. In brief the results can be summerized as follows:
1. If the transverse diameter of the paratracheal shadow exceeds 4.0 ㎝, there is about 90% change that the paratracheal shadow is larged and there is a good reason to suspect enlargement of the paratracheal lymph nodes. There is about 50% chance of the paratracheal shadow being abnormal if the diameter exceeds 3.8㎝.
2. If the sum of the right and left hilar diameters exceeds 6.7㎝, there is about 50% change of hilum being enlarged, and there is about 90% chance that the hilus is enlarged if the diameter exceeds 6.8㎝.
3. It appears that measurements of the paratracheal and hilar shadows are of valuable aid in recognizing early enlargement of the hilar and paratracheal lymph nodes in approximately 50% of the patients with primary tuberculosis in childhood.
Part Ⅲ. The Roentgenographic Study on the Hilar and Paratracheal shadows in Cases of Bronch ogenic Carcinoma
The data obtained from 120 normal adults (41-70 years) was compared with the measurements in 53 cases of proven early bronchogenic carcinoma, and statistically significant differences between these two groups were found. In summary it may be concluded as follows:
1. If the transverse diameter of the paratracheal shadow is under 4.7㎝, there is little chance of the upper mediastinal shadow being enlarged. If the diameter exceeds 5.3㎝, there is about 50% change of the subject being abnormal, and there is 90% change that the paratracheal shadow is enlarged if the diameter exceeds 5.6㎝.
2. It the transverse diameter of the left hilar shadow exceeds 5.9㎝, there is about 80% change of the hilum being enlarged, and there is about 90% change of the subject being abnormal if the diameter exceeds 6.3㎝. On the other hand there is about 60% chance that the hilus is enlarged if the transverse diameter of the right hilar shadow exceeds 6.2㎝, and 90% chance of hilar enlargement can be predicted if the diameter exceeds 6.5㎝.
3. If the total transverse diameter of the right and left hilar shadows in under 10.5㎝, there is little chance that th hilus is enlarged. If the diameter exceeds 11.3㎝, there is about 55% chance that either or both hili are enalrged, and there is about 90% chance of being abnormal if the diameter exceeds 11.8㎝.
It appears that measurement of the hilar shadows is of significant value in detecting hilar enlargement in the case of early bronchogenic carcinoma.
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